I was looking for a solution and this works for me currently :
1) let's start with an earring and type /useright "earring name".
2) follow by the necklace as separation /use "necklace name".
3) now put the other part of earring as /useleft "earring name".
4) now put the ring as /useright "ring name".
5) put the belt as separation /use "belt name".
6) finish with the other ring as /useleft "ring name".
so macro should look like this as an example :
/useright Discordant Magic Earrings
/use Discordant Magic Necklace
/useleft Discordant Magic Earrings
/useright Discordant Magic Ring
/use Discordant Magic Belt
/useleft Discordant Magic Ring
*You can swap the order of earrings / rings and necklace / belt. The important thing is to start with right side, a separation, then left).